[Issue 20168] New: Missing context when CTFE fails with 'no available source code'

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20168

          Issue ID: 20168
           Summary: Missing context when CTFE fails with 'no available
                    source code'
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Keywords: CTFE, diagnostic
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: simen.kjaras at gmail.com

int fun2();
int fun() { return fun2(); }
enum a = fun();

The above code gives an error message on line 2 (in fun()). This can be
arbitrarily deep inside a call chain, gives no indication of the call that
instantiated fun().

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